\documentclass{article}
\usepackage{fancybox}
\usepackage{shapepar}
\author{Your Name}
\title{Test Document}
\begin{document}
\maketitle
This is a test document
\ovalbox{right here}
\shadowbox{here shadowbox}
\doublebox{double box}
\mbox{only the mbox}
\diamondpar{tttttttttttttttttttttttttttttt}
\squarepar{xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx}
\begin{displaymath}
x=
\left \{
\begin{array}{cc}
1 & 2 \\
2 & 4 
\right .
\end{array}
\end{displaymath}
\end{document}
